So... What? They must provide up-to-date mechanisms to stop malicious actors and find anomalies to protect against cyber-attacks. Fake signatures? Cropped photo

So... What? They must provide up-to-date mechanisms to stop malicious actors and find anomalies to protect against cyber-attacks. Fake signatures? Cropped photo submitted multiple times under different names? Photoshopped materials? AI-generated materials? How do you detect this without training on real data?